Adjustable guide for box-covering machines



April 14, 1931- J. F. KACHLINE v 1,800,219

ADJUSTABLE GUIDE FOR BOX COVERING MACHINES Filed May '7, 1929 5 Sheets-Sheet l w f O g Q( n ,JSS

NVENTOR John Fjachline ATTORNEYS April 14, 1931- J-. F. KACHLINE ADJU'STABLE GUDE FOR BQX COVERING MACHINES Filed May 7, 1929 3 Sheets-*Sheet 2 INVENTOR John F Kachne ATTORNEYS April 14, 1931 J. F. KACHLINE ADJUSTABLE GUIDE FOR BOX COVERING MACHINES Filed May '7, 1929 3 Sheets-Shea?l 3 NVENTOR John F Kachline ATTORNEYS Patented Apr. 14, 1931 PATENT OFFICE JOHN F. KACHLINE, 0F READING, PENNSYLVANIA ADJUSTABLE GUIDE FOR BOX-COYEBING MACHINES Application led May 7,

This invention relates to box making machines'of the type in which a gummed paper strip Vis wound around the edge of the box, whilethe latter is supported on a suitable Jr'o'rm' or chuck mounted on a rotatable cross arm.

In such a machine, the central portion of thecross arm is rotatably mounted and its end portions carry the forms or chucks on which Vthe paper boxes are placed. As the cross arm is intermittently rotated, a strip off paper provided with adhesive is withdrawn from a suitable supply, and wound upon thev edges of the boxes. l/Vhen the cross arm is halted and in a horizontal position, aicarriage descends, and this carriage carries a movable knife which cooperates with a4 stationary knife on the cross arm for the'purpose ot severing the gummed strip. Thecarriage also supports suitable pressing devices and rollers, the latter being adapted to roll the strip against the chuck supported boxes. A pair of these rollers coact with the several ends of the pasted strip to roll them against the boxes. However, in actual practice, due to the fact that the pastedstrip has a tendency to curl or fold over upon itself, it frequently happens that the severed ends will be improperly applied to the boxes, and this will result in a waste of stock, and a decreased output ofthe machine! `The primaryl object of this invention is to eliminate such defect, by providing the maf lchine with devices which function to guide the end portions ot' the pasted strip after the latter has been severed.

Another object is to furnish guiding means for this purpose, which are arranged in close proximityto certain of the rollers, and cooperate with those rollers to prevent the severed ends ot the strip from curling orfolding over while they are being rolled into place by the rollers.

vil/Vith the foregoing'objects outlined and with7 ,otherv objects in view which will appear as the description proceeds, the inyention consists in the novelffeatures hereinatterdescribed in detail, illustrated in. the

192?. Serial No. 361,223.

parts in the positions they occupy prior to A the severing ot the strip.

` Fig. 2 is a similar view with the parts in the positions they reach after the strip has been severed, and whileY it is being rolled and pressed against the edges of the boxes.

Fig. 3 is an enlarged plan view" oftwo of the presser rollers showing the relation thereto of my improved strip guiding'devices. i

Fig. 4 is an enlarged diagrammatic View of the strip cutting and pressing roller mechanism, with my improved guide meansapplied thereto.

Fig. 5 is a side elevation of one of the guide means with the guide rod disengaged from the guide legs. i

Fig. 6 is a similar View, showing the guide rod engaged with the guide rails." A

Fig. 7 is a perspective view of the supporting plate for a guide rod. i

Fig. 8 is a fragmentary view of one of the guiderods. In the following description, enough only of the main machine will be described t0 facilitatean understanding of the present invention. This machine includes a frame 11, haying 'a cross arm 1Q pivotally mounted on intermittently,rotated fixed horizontal axle 13. This cross 'arm' carries at its ends, ,chucks or forms which support a pair of paper boxes 14, while the latter havetheir edges covered by means of a pasted strip 15. Whenever cross arm 12 comes into a horizontal position as shown in Figs. `1 and 2, it is halted, while certain instrumentalitiesact upon the strip 15. This strip, after having a suitable adhesive applied to one side thereof, is drawn over guiding means 17, and its end is secured at the point 18 to one of the boxes, by means of the adhesive on the strip. As the cross arm 12 is rotated, it will be seen that a portion 19 of the strip will be ycaused to bridge the gap between the two boxes, and then, when the parts are in theV position this end, the rotatable cross arm carries oppositely extending brackets 21, each of which supports a stationary knife 22 that engages Athe pasted surface of the strip along the line, i. e., when either one of these stationary knives is uppermost. When either knife is uppermost, it cooperates with a vertically movable knife 23, vwhich issupported by a carriage 24 arranged to intermittently descend and raise in timed relation to the rotation of cross arm 12.

Said carriage 24 also supports presser rollers 26 and 27, that are designed to roll the severed ends 28 and vertical portions of the strip against the opposite side edges of the boxes, as shown in Fig. 2, while a pressing member 29, also supported by the carriage, may be employed to engage the uppermost edges of the boxes, for pressing the vstrip-against the same yand steadying the vboxes during the side rollingl operations.

When strip 15 has been severed by the knives 22 and 23, and its ends are to be rolled against the opposed edges of the boxes by the rollers 27, it frequently happens that the severed ends will curl or fold upon themselves, or twist out of alinement and makea faulty job. To eliminate this curling and insure true alinement of said strip while being pressed against the box sides the following improvements have been provided.

lEach of the supporting arms 30 of the rollers 27, as shown, is provided with an outwardly extending lug 31, secured thereto by any suitable'means such as a bolt and nut 32, and each lug preferably has a vertically disposed slot`33 Ain which the upstanding arm 34 of a vsupport 35 is mounted and secured in adjusted positions by means of screws 36. The horizontal arms 37 of these L-shaped members are arranged substantially parallel and in spaced relation to the rollers 27, and each carries, as shown, a pair of slidably mounted guide fingers 38, adjustabiy secured thereto in spaced positions asv by screws 39, and are setto closely straddle the bridging portion 19 of the strip 15 when the carriage 14 descends.

The guide fingers 38, 38, alone willoperate to hold and properly guide the severed strip so that the descending rollers 27, 27 will fairly press said strip against the box sides in accurate position thereon. But in order to insure such accurate positioning and guard against undue curling and twisting of the severed ends of strip 15, I preferably employ, as shown, additional strip holding means adapted to' cooperate with said fingers 38, 38, as now to be described. v

In addition .to the pair of guide fingers 38, each arm 37, as indicated, supports a plate 40 to which a block 41 is pivoted as by ymeans of a bolt 42, and carries a ixed depending rod 43 adapted when the block is turned in a counter-clock-wise direetionas indicated in Fig. 6, to cooperate with the pair of guide fingers 38, 38 on that particular arm 37, to' engage the under side of strip 15 and hold it close to saidarm so as to form a loop or guide'slot 48 through which the bridging portion 19 of the pasted strip extends, such narrow slot 48 prevent- `fing curling or twisting of said strip portion presented to the action of roller 27.

For theY purpose of swinging the blocks 41, each of the knife supporting` brackets 21 as shown is preferably provided with a pair of-oppositely extending pins 44, vthat are horizontally positioned whenthe cross arm 12 is halted. Consequently, as the carriage 24 descends, the outer ends of blocks 41 will impinge against the pins 44, as illustrated in Fig. 3 and then, as the carriage continues to descend,-the pins 44 will function to swing the blocks ninety degrees on their pivot bolts 42, to cause their rods 43 to swing upwardly under pins 44 and across the gaps between the pairs of guide lingers 38, and in substantially close parallel relation to the horizontal arm portions 37 supporting said fingers 38.

Each block preferably is temporarily securedsin its horizontal or vertical position, as by the means shown particularly in Figs. 7 and 8, which means comprises, as shown, a spring pressed ball 45, carried by the block and cooperating with semispherical depressions 46 and 47 in the supporting plate 40. When the blockis in horizontal position, the ball will engage the depression 47, but will be forced out of this depression as the block is swung by one of the pins [44, to engage the depression 46 when the block reaches its vertical position, and thus latch the rod 43 which wasswung under pin 44 during the downward stroke, as above set forth, in place to provide the guide slot 48 aforesaid for the paper strip. When the carriage 24 moves upwardly, the pin 44 will then strike against the rod 43 and cause the ball 45 to disengage the depression 46, so that the rod 43 may be returned to its vertical normal position, where it is retained by said ball engaging depression 47. As shown, the striking action of pin 44 on'block end 41 and Vrod 43 causes the block to turn by momentum until stopped by engagement of its ball 45 withv one orother of depressions 46 or 47. I

From the above description, it is'believed that the operation of my improvementsV will be readily understood, but by way of reiteration, assume that V.the parts are in the position shown in Fig. 1: Now, as the carriage 24 descends, and at about the time the yrollers VV26and 27 vcome into engagement with the strip 15, the blocks 41 will be engaged by the pins 44, and the pairs of guide ingers 38 will have straddled the bridging portion of the paper strip. As the carriage continues to descend, the pins 44 will swing the blocks 4l and cause the rods 43 to swing up toward the under side of the strip, so as to provide the aforesaid guide slots 48 for the strip. At this time, the movable knife 23 cooperates with the stationary knife 22 to sever the strip, and as the carriage descends, the rollers 27 force these severed ends against the opposed side edges of the two boxes. Vvvhile this rolling action is taking place, the guide slots 48 as previously stated will thus prevent any curling or folding of the severed ends 28, with the result that these ends are smoothly applied to the boxes, and a neat job is accomplished.

After the aforesaid operations the carriage 24 is raised, and as it rides, the pins 44 J strike the rods 43 and swing them back to their original positions; and after the carriage has been completely raised, and the finished box 14 at the right has been removed, and another box has been placed upon the right hand chuck or form, the cross arm l2 is rotated one hundred and eighty degrees, so as to again place the strip l5 in the position shown in Fig. l.

From the foregoing it is believed that the construction, operation and advantages of the invention may be readily understood, and I am aware that various changes may be made in the details disclosed, without departing from the spirit of the invention, as expressed in the claims.

What I claim and desire to secure by Letters Patent is:

l. In a machine for applying a pasted strip to a box, means for'severing the strip, means for pressing the severed end portion of the strip against the box, and means movable with said pressing means for guiding said severed end portion while it is being pressed against the box, said guiding means including guide lingers adapted to be moved into positions at opposite edges of the strip at the time the latter is severed.

2. In a machine for applying a pasted strip to a box, means for severing the strip, means for pressing the severed end portion of the strip against the box, and means movable with said pressing means for guiding said severed end portion while it is being pressed against the box, said guiding means including a device adapted to straddle the strip, and a movable member cooperating with said device to form a guide slot.

3. In a machine of the character described, a roller for pressing a pasted strip against a box, an arm arranged substantially parallel to the roller and movable upwardly and downwardly with the latter, guide fingers depending from the arm and adapted to be positioned on opposite sides of the strip, a swinging support mounted on said arm, a rod adapted to cooperate with the fingers to form a guide slot, and a stationary abutment cooperating with the swinging support for actuating the latter.

4. In a machine of the character described, an intermittently rotatable cross arm adapted to support a plurality of boxes at its ends, the boxes being provided with a pasted strip which bridges the gap between the boxes, a carriage movable toward and away from the cross arm, cooperating knife elements on the cross arm and carriage for severing the bridging portion of the strip, rollers supported by the carriage and adapted to press the severed end portions of the strip against opposed faces of said boxes, and guiding means cooperating with the rollers for guiding the severed end portions of the strip while they are being pressed against the boxes by the rollers.

5. In a machine of the character described, an intermittently rotatable cross arm adapted to support a plurality of boxes at its ends, the boxes being provided with a pasted strip which bridges the gap between the boxes, a carriage movable toward and away from the cross arm, cooperating knife elements on the cross arm and carriage for severing the bridging portion of the strip, rollers supported by the carriage and adapted to press the severed end portions of the strip against opposed faces of said boxes, and guiding means cooperating with the rollers for guiding the severed end portions of the strip while they are being pressed against the boxes by the rollers; said guiding means includes an arm, depending guide fingers mounted in spaced relation on the arm, a movable member cooperating with the fingers and arm to provide a guide slot for the strip, and means on the cross arm for actuating the last mentioned member.

In testimony whereof I afiix my signature.

JOHN F. KAGHLINE. 

